Jat Community Gotra or Clan System in India refers to social organization of the Jats, Indo-Aryans /Indo-Scythian people of Northern India and Pakistan. The clan names of the Jat people are unique in India. However, some small number of their clan names do overlap with the Rajputs and Gujars. A Jat clan may include both gotra and vansha. List of Jat Clans have been compiled by many Jat historians. These lists have more than 2700 Jat clans or gotras. Like caste, gotras and vanshas do not change. There can be more than one gotra in a vansha but there can not be more than one vansha in a gotra. Most of the Jat clans come from Chandravansh lineage but they are also from Suryavansha, Agnivansh and Nagavanshi descent. Singh and Choudhury are common surnames used by a number of castes these do not reflect ancestry or caste and therefore are not considered as clans or vanshas. It is necessary to understand difference between clan, gotra and vansha. Jat clans may include both gotra and vansha.Some of Jat Gotras are listed here